Paint-spraying nozzle.



D. A. DORAN.

PAINT SPHAYING NOZZLE.

APPLICATION FILED SEPT- 25. 1918.

1,826,483. Patented Dec. 30,1919.

$ 1115 Gite 014335 m DANIEL A. DURAN, 0F YONKERS, NEW YORK.

TAINT-SPEAYING NUZZLE.

Specification of Letters Patent.

Patented Dec, 3t), 1919.

Application filed September 25, 1913. Serial No. 255.607.

To all whom it may concern:

Be it known that I, DANIEL A. DORAN, a citizen of the United States, and residing at Yonkers, in the county of l/Vestchester and State of New York, have invented certain new and useful Improvements in Paint- Sp'raying Nozzles, of which the following is a specification, such as will enable those skilled in the art to which it appertains to make and use the same.

This invention relates to paint spraying nozzles used for the purpose of spraying paint upon a surface by the use of air pressure; andthe object of the invention is to provide an improved air supply device consisting of a nozzle adapted to discharge two separate sprays of air, one of which forces the paint upon the surface to be painted and the other of which incloses the first named spray and prevents the fumes arising from "the paint spray from coming in contact with the operator of the apparatus; and a further object being to' provide an attachment for the air supply device designed to discharge a third spray of air from said supply at a predetermined distance from the nozzle and directed to and around the face of the operator; and with these and other objects in viewthe invention consists in an apparatus of the class and for the purpose specified which is simple in construction and operation and efficient in use.

The invention is fully disclosed in the following specification, of which the accompanying drawing forms a part, in which the separate parts of my improvement are designated by suitable reference characters in each of the views, and in which Figure 1 is a side view of a paint spraying apparatus and illustrating my improved air supply device;

F ig. 2 a view similar to Fig. 1 but showing only a partof the construction, with parts in section, and on an enlarged scale; and,

paint supply tube of an apparatus of the class specified to the free end of which is secured a nozzle 6, having a tapered or conical discharge head 7 from which paint under pressure is discharged, The paint supply to the tube 5 may be of the usual or any Fig. 3 a detail sectional view of a part of desired form and construction, and'for this reason is not shown nor described.

In practice, an air supply tube S/is mounted parallel with the tube 5 and secured to the end of said tube is my improved discharge nozzle 9 having a conical head 10, the end of which is provided with a discharge aperture 11 and adjacent to the base of the conical head 10 are a plurality ofannularly arranged apertures 12, which are inclined to the axis of the nozzle and through which air in the tube 8 may also be discharged.

The discharged air through the aperture 11 forms a spray 13 into which the paint from the tube 5 is discharged, and by means of which said paint is forced onto the surface to be painted in the usual manner, and

in this operation an annular spray of air 14 is discharged from the nozzle 9 around the spray 13 and at a predetermined distance therefrom to inclose said spray therein and prevent the fumes of the paint or the gases arising therefrom from being discharged backwardly or coming in contact with the operator of the apparatus, or said spray discharge 14 forms an annular fresh air body which incloses or tends to inclose the paint and air discharge 13, as will be readily understood, and prevents the fumes arising from said paint and air discharge from passing in the direction of the operator of the machine. It will be noted that by varying the angle of the apparatus 12, the spread of the annular spray 14 may be regulated, but this is probably located in such manner as to inclose the spray 13 and yet direct the escaping fumes forwardly in the direction of the surface upon which the paint is to be applied.

Mounted in the tube 8 at a predetermined distance from the nozzle 9 is a valve device 15, consisting of a cross head portion 16 having a bore 17 with which the tube 8, or the separate parts thereof are connected, as clearly shown in Fig. 3, and the cross head 16 of the valve device 15 is provided withan upwardly directed body portion 18, having a discharge head 19. The body 18 is provided with a central bore 20 which communicates with the bore 17. A valve 21 is mounted in'the body 18 to move at right angles to the bore '20 therein, said valve being; provided adjacent to its inner end with an aperture :22 adapted to cooperate with the bore 20 when the valve 21 is moved inwardly against the tension of a spring 23 by the thumb or finger of a hand placed upon an enlarged head 24 on the outer end of the valve 21. The valve 21 is retained within the body 18 by a sleeve nut 25 which cooperates with an enlarged flange portion 26 centrally of the valve, this construction is clearly shown in Fig. 3.

The valve device 15 is designed to dis charge a spray of air 27 from the tube 8 in the direction of the face of the operator at his will, or when such operator forces the valve 21 inwardly against the tension of the spring 23 to bring the aperture 22 of said valve into cooperation with the bore of the valve device 15, and when said spray is no longer required the same maybe shut off by releasing the valve 21.

It will be understood that the usual valves for controlling the supply of air to the tube 8 and paint to the tube 5 are employed in connection with this apparatus, but as the same form no part of my invention are not shown nor described, and these valves will regulate the air pressure as well as the amount of paint discharged from the nozzle, this is usually the practice, my invention consisting simply in providing the additional air discharge or spray 14 as well as the air discharge or spray 27 and while I have shown both of these sprays, it will'be understood that my invention is not necessarily limited to the use of both, as either one of these sprays may be used separately,

if desired, or if it be found that one will be sufficient to accomplish the desired result,

and while I have shown a specific construction for carrying my invention into efiect, it will be understood that various changes therein and modifications thereof may be made, within the scope of the appended claims, without departing from the spirit of my invention, *or sacrificing its advantages.

The spray device 14 while being principally designed to prevent the back passage of the fumes or mist containing more or less paint also serves to save from ten to fifteen per cent. of the waste of paint in applying the same to a surface, this being accomplished by reason of the spray discharge l-t incasing or inclosing the spray discharge 1 3 and thus aids in applying the paint to the desired surface, or prevents the excess spreading of the paint while being applied.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent, is I 1. In an apparatus of the class described, an air supply tube, the end of which is provided with a nozzle having a discharge aperture at its free end through which a spray of air is dicharged, and said nozzle being provided rearwardly of said aperture with means whereby another and independenta predetermined distance from the first named spray.

2. In an apparatus of the class described,

an air supply tube, the end of which is provided with a nozzlehaving a discharge aperture at its free end through which a spray of air is discharged, and a plurality of aper of air may be discharged.

3. In an apparatus of theclass described,

an air supply tube, the end of which is provided with a nozzle having a discharge aperture at its free end through which a spray of air is discharged, and a plurality of' annularly arranged apertures in said nozzle rearwardly of the first named aperture therein and through which air is discharged to produce an annular spray of air around and independent of the first named spray of air discharged from said nozzle.

4. In an apparatu of the class described,

' an air supply tube, the end of which is provided with a nozzle having a discharge aperture at its free end through which a spray of air is discharged, and said nozzle being provided rearwardly of said aperture with a plurality of annularly arranged apertures which are at an angle to the axis of the nozzle and through which air is discharged to produce an annular spray of air around the first named spray of air discharged from said nozzle and at a predetermineddistance therefrom.

5. In an apparatu of the class described, an air supply tube, the end of which is provided with a nozzle having a. discharge. aperture at its free end through which a spray of air is discharged, said nozzle being provided rearwardly of said aperture with a plurality of annularly arranged apertures and through which air is discharged to produce an annular spray of air around the first named spray of air discharged from said nozzle and at a predetermined distance therefrom, and the air supply tube being provided rearwardly of said nozzle with an air discharge valve device.

6. In an apparatus of the class described, an air supply tube the end of which is provided with a nozzle having a discharge aperture at its free end through which a spray of air isdischarged, said nozzle being provided rearwardly of said aperture with means whereby another spray of air may be discharged therefrom, and means for dis charging another spray of air from said tube rearwardly of said nozzle.

7. In an apparatus of the class described, an air supply tube the end of which is provided with a nozzle having a discharge aperture at its free end through which a spray of air is discharged, said nozzle being provided rearwardly of said aperture with 186 1 326,483 &

means whereby another spray of air may as my invention I have signed my name in be discharged therefrom, a, valve device presence of the subscribing Witnesses this 10 mounted1 i3 said aiif supply (i'iube atl a priide- 23rd day of Sept, 1918. termine istance rom sai nozz e, an a 5 tensiona-lly controlled valve in said valve DANIEL DURAN device for controlling the discharge of air Witnesses: from said tube through said valve device. C. E. MULREANY,

In testimonv that lf claim. the foregoing H. E. THOMPSON. 

